This chess problem is about 1,000 years old and was supposedly devised by someone called Al Adli. I have no information about this character, but whoever it was, the problem has a fine, elegant solution.
As you can see, Black, whose turn it is to play, is in dire trouble. White can play either Ra1 or R (either of them)-b2 and it’s curtains for Black. How can Black survive and in fact win? See comments for solution.